Improvement in warp-feeding mechanism foe looms



y @sionistes geant ffii.

ALFRED B. ELY, O F NEWTO N, MASSACHUSETTS.

Letters Patent No. 72,379, dated December 17, 1867.

IMPROVEMENTIN WARP-I'EEDING MEGHAN-ISM FOR LOOMS.

@La tlgnule muret it in tlnsettttts ntttnt mit making putt tf tlg: time.

TO ALL WHOM` IT MAY CONQERN:

Be it known that I, ALFRED B. E LY, of Newton, in the county of Middlesex', and State of Massachusetts, have invented a 'new and useful Improvement in the Feed-Rolls of Looms, of which the following is a full, clear,

and exact description, reference beingha'd to the accompanying drawing, which makes part'of this spccicatiom' and which represents a view in elevation of so much of one side of a loom, to which my improvement is applied,l Y

as'is necessary to illustrate my invention. l It is the object of my invention to secure a simple effective device for feeding thc yarn uniformly by a. positive motion, and ofholding it lirmly at the momentof beating up the iilling, and to these ends-the improvement herein claimed consists in a novel mode of combining with Athe loom, feed-rolls actuated directly from the lay, as hereinafter fully described. 4

In the accompanying drawing-which exemplifies one convenient arrangement of devices for carrying out the objects of my invention, the mechanism is shown as mounted in a suitable frame, A, having a yarn-beam, B, at one end, and a cloth-beam, C, at the other. The yarn passes. from the yarn-beam over a roller, 1, to the lay. After being woven, the cloth passesover another roller, 2, to the cloth-beam. The swords D of the layoscillate onpivots, d, on the frame. To regulate the feed of the yarn, I arrange two rollers, E and F, across the frame, parallel with and close to the lay. These rolls I prefer to cover with rubber or gatta perche, as the peculiarly elastic and tenacious charncterof thc'sc materials renders them superior to all others with which Iam acquainted, asowing to these characteristics they readily ada-pt themselves to yarns of varying sizes or di'erent degrees of hardness or roundness, and thus'produce a uniform feed. The lower roll E turns in iixed bearings. In order, however, to adjust the pressure as required, the upper roll F is mounted in boxes,f, moving vertically in suitable gujdesnand controlled by set-screws, G. A ratchet-wheel, y, is secured upon'onc end of the under g roll E. A detent-pawl, J, turning on a. pivot, 3, on the frame, takes vinto this ratchet, and thus prevents the backward movement ofthe roller. dog or pawl, It, turns on a pivot, 4, on the lay, and is held in contact with the' ratchet-wheel gv by a spring, m; consequently, on each backward movement o f the lay, Vthe roll E is rotated, so that its upper side moves toward the lay, whileits friction rotates the roll F, so .that its under-side moves toward the luy, and thus feeds theynrn which passes between the two rolls to the lay with apositive intermittent motion. As the beat of the layis made when the rolls are at rest,tbe yarn is held iirmly, so as to produce a cloth of uniform texture. The rolls are also free toturn forward in case of any extra `strain on' the yarn, which prevents itsbreaking, and thc feed takes place on the backward movement of thc lay, thus avoiding any strain on the yarn save the friction of the feedrolls.

I have described only those parts essential to my improvement, which 'is to be applied to a fully-organized working machine, the details of construction of which are well known, and consequently require no description here.

I am aware that it has been heretofore proposed'to use in looms, feed-rolls of rubber worked bygcaring.

I am also aware that the 1ct-off and take-up motions of looms have been worked frowthe lay. I do not,

therefore, broadly claim these features;` but What Icla'im as my invention, and`desirc to secure by Letters Patent, is- 1. The feed-rolls E F, arranged as described, and operated directly from the lay, for thc purpose set forth.

.2. The combination, substantially as described, of the yarn-bc'am and lay with the rubber feed-rolls actuated n 'directly from the lay, for the purposes set forth.

In testimony whereof, I have hereunto subscribed my name.

ALFRED B. ELY. Witnesses:

P. HANNAY,

D. E. Seuss. 

